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Kolkata, India

DebMandal M.,KPC Medical College and Hospital | Mandal S.,Gurudas College
Asian Pacific Journal of Tropical Medicine | Year: 2011

Coconut, Cocos nucifera L., is a tree that is cultivated for its multiple utilities, mainly for its nutritional and medicinal values. The various products of coconut include tender coconut water, copra, coconut oil, raw kernel, coconut cake, coconut toddy, coconut shell and wood based products, coconut leaves, coir pith etc. Its all parts are used in someway or another in the daily life of the people in the traditional coconut growing areas. It is the unique source of various natural products for the development of medicines against various diseases and also for the development of industrial products. The parts of its fruit like coconut kernel and tender coconut water have numerous medicinal properties such as antibacterial, antifungal, antiviral, antiparasitic, antidermatophytic, antioxidant, hypoglycemic, hepatoprotective, immunostimulant. Coconut water and coconut kernel contain microminerals and nutrients, which are essential to human health, and hence coconut is used as food by the peoples in the globe, mainly in the tropical countries. The coconut palm is, therefore, eulogised as 'Kalpavriksha' (the all giving tree) in Indian classics, and thus the current review describes the facts and phenomena related to its use in health and disease prevention. © 2011 Hainan Medical College.


Mandal S.,Gurudas College | Deb Mandal M.,KPC Medical College and Hospital
Asian Pacific Journal of Tropical Medicine | Year: 2012

This review represents an updated scenario on the transmission cycle, epidemiology, clinical features and pathogenicity, diagnosis and treatment, and prevention and control measures of a cestode parasite Echincoccus granulosus (E. granulosus) infection causing cystic echinococcosis (CE) in humans. Human CE is a serious life-threatening neglected zoonotic disease that occurs in both developing and developed countries, and is recognized as a major public health problem. The life cycle of E. granulosus involves a definitive host (dogs and other canids) for the adult E. granulosus that resides in the intestine, and an intermediate host (sheep and other herbivores) for the tissue-invading metacestode (larval) stage. Humans are only incidentally infected; since the completion of the life cycle of E. granulosus depends on carnivores feeding on herbivores bearing hydatid cysts with viable protoscoleces, humans represent usually the dead end for the parasite. On ingestion of E. granulosus eggs, hydatid cysts are formed mostly in liver and lungs, and occasionally in other organs of human body, which are considered as uncommon sites of localization of hydatid cysts. The diagnosis of extrahepatic echinococcal disease is more accurate today because of the availability of new imaging techniques, and the current treatments include surgery and percutaneous drainage, and chemotherapy (albendazole and mebendazole). But, the wild animals that involve in sylvatic cycle may overlap and interact with the domestic sheep-dog cycle, and thus complicating the control efforts. The updated facts and phenomena regarding human and animal CE presented herein are due to the web search of SCI and non-SCI journals. © 2012 Hainan Medical College.


Adhikary B.,Gurudas College | Chakraborty M.,Saha Institute of Nuclear Physics | Ghosal A.,Saha Institute of Nuclear Physics
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2012

We investigate the "scaling Ansatz" in the neutrino sector within the framework of a type-I seesaw mechanism with diagonal charged lepton and right-handed Majorana neutrino mass matrices (M R). We also assume the four zero texture of Dirac neutrino mass matrices (m D) which severely constrain the phenomenological outcomes of such schemes. The scaling Ansatz and the present neutrino data allow only six such matrices out of 126 four zero Yukawa matrices. In this scheme, in order to generate large θ 13, we break the scaling Ansatz in m D through a perturbation parameter and we also show that our breaking scheme is radiatively stable. We further investigate CP violation and baryogenesis via leptogenesis in those surviving textures. © 2012 American Physical Society.


Nandi K.,Gurudas College | Mazumdar C.,Jadavpur University
International Journal of Theoretical Physics | Year: 2014

Recently Yang et al. (Int. J. Theor. Phys. 48:516, 2009) had shown that using a particular type of GHZ- Like state as quantum channel, it is possible to teleport an arbitrary unknown qubit. We investigate this channel for the teleportation of a particular type of two qubit state. © 2013 Springer Science+Business Media New York.


Objective: To determine the larvicidal and adult emergence inhibition activities of castor (Ricinus communis) seed extract against three potential mosquito vectors Anopheles stephensi (An. stephensi), Culex quinquefasciatus (Cx. quinquefasciatus) and Aedes albopictus (Ae. albopictus) in India. Methods: The R. communis seed extract was tested, employing WHO procedure, against fourth larval instars of the three mosquito species for 24 h and larval mortalities were recorded at various concentrations (2-64 μg/mL); the 24 h LC50 values of the R. communis seed extract were determined following Probit analysis. The larval killing, antipupation and adult emergence inhibition rates of the test extract, using a single concentration of 2 μ LC50, were studied at different time periods (24-72 h); the extract toxicity was tested against a fish, Oreochromis niloticus (O. niloticus). Results: The R. communis seed extract exhibited larvicidal effects with 100 % killing activities at concentrations 32-64 μg/mL, and with LC50 values 7.10, 11.64 and 16.84 μg/mL for Cx. quinquefasciatus, An. stephensi and Ae. albopictus larvae, respectively. When the larvae were treated with the extract at a single concentration of 2×LC50, significant differences were observed, compared to control groups, in rate of pupation (P<0.001) as well as in adult formation (P<0.001). Conclusions: The present findings suggest that the R. communis seed extract provided an excellent potential for controlling An. stephensi, Cx. quinquefasciatus and Ae. albopictus mosquito vectors. © 2010 Hainan Medical College.

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